SelectWithUnionQuery (children 1)
 ExpressionList (children 1)
  SelectQuery (children 1)
   ExpressionList (children 2)
    Function LEAST (alias x) (children 1)
     ExpressionList (children 2)
      Literal Int64_-1
      Literal UInt64_18446744073709551615
    Function toTypeName (children 1)
     ExpressionList (children 1)
      Identifier x